Company lists · Data refreshed September 2026

Top 25 Hvac design build firms worldwide

Name: Hvac design build firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 33,632 companies tracked

RevenueBase identified 33,632 hvac design build firms worldwide as of September 2026 and tracks 368,516 professional contacts across them, including 105,300 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers hvac design build firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for hvac design build firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

33,632Companies

368,516Contacts tracked

105,300Verified emails

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The 25 largest hvac design build firms worldwide

Ranked by team size

Top 25 of 33,632 hvac design build firms worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hvac design build firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Blue Star Limited	Indirect evidence	Mumbai, IndiaHQ checked Sep 20, 2026	1,001-5,000	6,621 contacts →
	Indirect evidence “Blue Star Limited is India’s leading air conditioning and commercial refrigeration company with over eight decades of experience in providing expert cooling solutions.” Source: RevenueBase Database · checked Sep 20, 2026
2	Equans Belux	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	5,001-10,000	5,297 contacts →
	Indirect evidence “What if you could use your talent to contribute to the great challenges of tomorrow?” Source: RevenueBase Database · checked Sep 20, 2026
3	Equans	Indirect evidence	Courbevoie, FranceHQ checked Sep 20, 2026	10001+	5,064 contacts →
	Indirect evidence “Equans, a Bouygues group company, is a world leader in multi-technical services with offices in 20 country hubs.” Source: RevenueBase Database · checked Sep 20, 2026
4	Daikin Applied Americas	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	10001+	4,204 contacts →
	Indirect evidence “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Source: RevenueBase Database · checked Sep 20, 2026
5	Power Design	Strong evidence	St. Petersburg, FL, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,447 contacts →
	Strong evidence “Power Design is a National Design Build Contractor, focused on innovative construction across multiple trades: electrical, mechanical, plumbing, and systems technologies.” Source: RevenueBase Database · checked Sep 20, 2026
6	Acco Engineered Systems	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 20, 2026	5,001-10,000	2,415 contacts →
	Partial evidence “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Source: RevenueBase Database · checked Sep 20, 2026
7	Modern Niagara	Partial evidence	Kanata, ON, CanadaHQ checked Sep 20, 2026	1,001-5,000	1,556 contacts →
	Partial evidence “We build for life.” Source: RevenueBase Database · checked Sep 20, 2026
8	Emcor Group, INC	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 20, 2026	10001+	1,383 contacts →
	Indirect evidence “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Source: RevenueBase Database · checked Sep 20, 2026
9	Comfort Systems USA	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	10001+	1,330 contacts →
	Indirect evidence “Comfort Systems USA \| Quality People.” Source: RevenueBase Database · checked Sep 20, 2026
10	Macdonald-Miller Facility Solutions	Strong evidence	Seatac, WA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,303 contacts →
	Strong evidence “MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 20, 2026
11	Bravida Danmark A S	Indirect evidence	Brøndby, DenmarkHQ checked Sep 20, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Source: RevenueBase Database · checked Sep 20, 2026
12	Aaon, INC	Strong evidence	Tulsa, OK, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,208 contacts →
	Strong evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 20, 2026
13	Fawaz Group	Indirect evidence	KuwaitHQ checked Sep 20, 2026	1,001-5,000	1,085 contacts →
	Indirect evidence “Welcome to FAWAZ Group official account!” Source: RevenueBase Database · checked Sep 20, 2026
14	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 20, 2026
15	Ventec S.A	Indirect evidence	Casablanca, MoroccoHQ checked Sep 20, 2026	1,001-5,000	959 contacts →
	Indirect evidence “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Source: RevenueBase Database · checked Sep 20, 2026
16	MCI SAS	Indirect evidence	Carquefou, FranceHQ checked Sep 20, 2026	1,001-5,000	943 contacts →
	Indirect evidence “Spécialiste du froid et la climatisation depuis 60 ans, MCI s'engage à vous offrir un grand choix de solutions et de services parfaitement adaptés à vos exigences.” Source: RevenueBase Database · checked Sep 20, 2026
17	Cmta, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	501-1,000	936 contacts →
	Indirect evidence “CMTA is part of Legence, a Nasdaq Listed company.” Source: RevenueBase Database · checked Sep 20, 2026
18	Stellar	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 20, 2026	501-1,000	899 contacts →
	Partial evidence “Stellar, headquartered in Jacksonville, Florida, is a fully integrated firm focusing on design, engineering, construction, refrigeration, and mechanical and electrical services…” Source: RevenueBase Database · checked Sep 20, 2026
19	Bravida Norge AS	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	1,001-5,000	891 contacts →
	Indirect evidence “Bravida gir bygninger liv.” Source: RevenueBase Database · checked Sep 20, 2026
20	Anel Group	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	1,001-5,000	867 contacts →
	Indirect evidence “Founded by Rıdvan Çelikel in 1986, Anel is a global contracting company with its expertise in MEP systems in large scale and challenging projects.” Source: RevenueBase Database · checked Sep 20, 2026
21	AHERN	Partial evidence	Fond Du Lac, WI, United StatesHQ checked Sep 20, 2026	1,001-5,000	849 contacts →
	Partial evidence “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Source: RevenueBase Database · checked Sep 20, 2026
22	BK Gulf LLC	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 20, 2026	5,001-10,000	774 contacts →
	Indirect evidence “Established in 1978, BK Gulf LLC is a leading contractor in electrical, mechanical, instrumentation and building services within the UAE & Middle East market.” Source: RevenueBase Database · checked Sep 20, 2026
23	Coolsys	Indirect evidence	Brea, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	750 contacts →
	Indirect evidence “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Source: RevenueBase Database · checked Sep 20, 2026
24	Cimco Refrigeration INC	Partial evidence	Burlington, ON, CanadaHQ checked Sep 20, 2026	1,001-5,000	738 contacts →
	Partial evidence “CIMCO Refrigeration specializes in the engineering, design, manufacture, installation and service of industrial, process cooling and recreational refrigeration systems.” Source: RevenueBase Database · checked Sep 20, 2026
25	Kinetics	Strong evidence	Livermore, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	734 contacts →
	Strong evidence “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: hvac design build firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names hvac design build firms.
Partial evidence: Its own public description names part of hvac design build firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac design build firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 33,632 hvac design build firms worldwide

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Hvac design build firms worldwide at a glance

As of Sep 20, 2026

28.6%Verified-email coverage

11.0Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

14,758

11-50

12,942

51-200

4,126

201-500

885

501-1,000

226

1,001-5,000

160

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hvac design build firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for hvac design build firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hvac design build firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names hvac design build firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among hvac design build firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 105,300 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Hvac design build firms by location

107 lists · largest first

Every Hvac design build firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names hvac design build firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many hvac design build firms are there worldwide?

RevenueBase identified 33,632 hvac design build firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Blue Star Limited, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most hvac design build firms?

The United States leads with 9,972 companies, followed by the United Kingdom (1,914) and Italy (1,755). Every hvac design build firms list by country and city is linked on this page.

Which city has the most hvac design build firms?

Sao Paulo leads with 305 headquartered companies, followed by London (174) and Houston (159).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 105,300 verified decision-maker contacts tracked across these 33,632 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.